<% if userThumbImage.image.nil? -%>
    <%= link_to(image_tag('default_avatar_thumb.jpg', :alt => "#{userThumbImage.display_name}", :class => 'picborder'), user_path(userThumbImage.login))%>
<% else -%>
    <%= link_to(image_tag(url_for_file_column(userThumbImage, "image", "thumb"), :alt => "#{userThumbImage.display_name}", :class => 'picborder'), user_path(userThumbImage.login))%>
<% end -%>